一、安装HandlerSocket-Plugin-for-MySQL
https://github.com/ahiguti/HandlerSocket-Plugin-for-MySQL #cd HandlerSocket-Plugin-for-MySQL #sh ./autogen.sh #./configure --with-mysql-source=/home/jfy/soft/Percona-Server-5.5.18-rel23.0 --with-mysql-bindir=/usr/local/mysql/bin --with-mysql-plugindir=/usr/local/mysql/lib/plugin vi /etc/my.cnf [mysqld] plugin-load=handlersocket.so(plugin-load可略过不配) loose_handlersocket_port = 9998 # 指定读请求端口号 # the port number to bind to (for read requests) loose_handlersocket_port_wr = 9999 # 指定写请求端口号 # the port number to bind to (for write requests) loose_handlersocket_threads = 16 # 指定读线程数目 # the number of worker threads (for read requests) loose_handlersocket_threads_wr = 1 # 指定写线程数目 # the number of worker threads (for write requests) open_files_limit = 65535 # to allow handlersocket accept many concurren connections, make open_files_limit as large as possible. handlersocket_timeout = 3600 # 保持连接空间时间,默认一个连接空闲5分钟就会被释放 #mysql.server restart #mysql mysql>show plugins; | handlersocket | ACTIVE | DAEMON | handlersocket.so | BSD | # netstat -an | grep 9998 tcp 0 0 0.0.0.0:9998 0.0.0.0:* LISTEN
二、安装php-ext-handlersocketi
https://github.com/piteer1/php-handlersocket #cd php-handlersocket-master #/usr/local/php/bin/phpize #./configure --with-php-config=/usr/local/php/bin/php-config #make & make install #vi /usr/local/php/lib/php.ini extension=handlersocket.so #php -m handlersocket
三、测试
-- 用户表 drop table IF EXISTS user; create table user ( userid char(8) binary PRIMARY key, username varchar(32) comment '用户昵称', feature char(16) comment '功能', siminfo char(15) comment 'SIM信息IMSI', msisdn char(13) comment '用户手机号码', countyrcode char(3) comment '国家码', zgtflag char(1) comment '中港通标志YN', usertype char(16) comment '用户类型', operatorid char(32) comment '操作工号', createtime TIMESTAMP comment '创建时间', PRIMARY KEY (msisdn), unique index useridx(userid) ); -- 用户帐户表 drop table IF EXISTS useracnt; create table useracnt ( userid char(8) binary PRIMARY key , activetime TIMESTAMP comment '激活时间', amount INT UNSIGNED comment '帐户金额(分)', validdate date comment '有效期', status char(1) comment '帐户状态', nextkfdate date comment '下次扣费时间' );
<?php $host = 'localhost'; $port = 9998; $port_wr = 9999; $dbname = 'voip'; $table1 = 'user'; $table2 = 'useracnt'; try { $hs_read = new HandlerSocket($host, $port); $idx_user_r = $hs_read->createIndex(1, $dbname, $table1, 'PRIMARY', array('userid','zgtflag')); $hs_write = new HandlerSocket($host, $port_wr); $idx_useracnt_w = $hs_write->createIndex(2, $dbname, $table2, 'PRIMARY', 'amount'); } catch (HandlerSocketException $exception) { var_dump($exception->getMessage()); die(); } //GET $retval = $idx_user_r->find('85265101177'); list($userid,$zgtflag) = $retval[0]; echo $userid . "\n"; echo $zgtflag . "\n"; //UPDATE $amount=round(0.95*100); $ret = $idx_useracnt_w->update($userid, array('-?' => $amount)); var_dump($ret); if ( $ret === false) { echo __LINE__, ':', $index->getError(), ':', PHP_EOL; die(); } if ( !is_array($ret) ) { echo "update not found!\n"; die(); } if ( intval($ret[0][0]) < $amount ) { echo "balance is not enough!\n"; die(); } echo "update ok!\n"; unset($index); unset($hs); exit;
12核CPU,Percona MySQL 5.5.18,InnoDB_buffer_size=16G,read/wrige thread各16
经测试,使用handlersocket比直接用sql大概只能提高0.5倍左右,测试数据均在innodb buffer中
以前MySQL5.1时,HandlerSocket性能会有很大优势,MySQL5.5性能有提高,优势不明显

The main role of MySQL in web applications is to store and manage data. 1.MySQL efficiently processes user information, product catalogs, transaction records and other data. 2. Through SQL query, developers can extract information from the database to generate dynamic content. 3.MySQL works based on the client-server model to ensure acceptable query speed.

The steps to build a MySQL database include: 1. Create a database and table, 2. Insert data, and 3. Conduct queries. First, use the CREATEDATABASE and CREATETABLE statements to create the database and table, then use the INSERTINTO statement to insert the data, and finally use the SELECT statement to query the data.

MySQL is suitable for beginners because it is easy to use and powerful. 1.MySQL is a relational database, and uses SQL for CRUD operations. 2. It is simple to install and requires the root user password to be configured. 3. Use INSERT, UPDATE, DELETE, and SELECT to perform data operations. 4. ORDERBY, WHERE and JOIN can be used for complex queries. 5. Debugging requires checking the syntax and use EXPLAIN to analyze the query. 6. Optimization suggestions include using indexes, choosing the right data type and good programming habits.

MySQL is suitable for beginners because: 1) easy to install and configure, 2) rich learning resources, 3) intuitive SQL syntax, 4) powerful tool support. Nevertheless, beginners need to overcome challenges such as database design, query optimization, security management, and data backup.

Yes,SQLisaprogramminglanguagespecializedfordatamanagement.1)It'sdeclarative,focusingonwhattoachieveratherthanhow.2)SQLisessentialforquerying,inserting,updating,anddeletingdatainrelationaldatabases.3)Whileuser-friendly,itrequiresoptimizationtoavoidper

ACID attributes include atomicity, consistency, isolation and durability, and are the cornerstone of database design. 1. Atomicity ensures that the transaction is either completely successful or completely failed. 2. Consistency ensures that the database remains consistent before and after a transaction. 3. Isolation ensures that transactions do not interfere with each other. 4. Persistence ensures that data is permanently saved after transaction submission.

MySQL is not only a database management system (DBMS) but also closely related to programming languages. 1) As a DBMS, MySQL is used to store, organize and retrieve data, and optimizing indexes can improve query performance. 2) Combining SQL with programming languages, embedded in Python, using ORM tools such as SQLAlchemy can simplify operations. 3) Performance optimization includes indexing, querying, caching, library and table division and transaction management.

MySQL uses SQL commands to manage data. 1. Basic commands include SELECT, INSERT, UPDATE and DELETE. 2. Advanced usage involves JOIN, subquery and aggregate functions. 3. Common errors include syntax, logic and performance issues. 4. Optimization tips include using indexes, avoiding SELECT* and using LIMIT.


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